Adjustable table



R. s. CARR. ADJUSTABLE TABLE. N0. 427,22a. Patented May 6, 1890. L A Y Ia z z 1 A3,, C aw/5.,

INVENTOR UNITED STATES PATENT FFICE.

ROBERT S. CARR, OF HAMILTON, OHIO.

ADJ U STAB LE TAB LE.

SPECIFICATION forming part of Letters Patent No. 427,223, dated May 6,1890. Application filed September 18, 1889. Serial No. 324,284.. (Nomodel.)

To all whom it may concern.-

Be it known that I, ROBERT S. CARR, of Hamilton, Butler county, Ohio,have invented certain new and useful Improvements in Adjustable Tables,of which the following is a specification, reference being had to theaccompanying drawings, in which Figure 1 represents a front elevation ofthe table with parts broken away to show the interior arrangement of thestandard. is a diametrical section of the taper pin and flange. Fig. 3shows Fig. 2 in perspective inverted. Fig. 4 is a plan showing themanner of adjusting and clamping the table-top. Fig. 5 is a verticalsection of Fig. 4. Fig. 6 represents a plan of the eccentric collar orhandwheel D. Fig. 7 represents a plan of the table with the top placedvertical. Fig. 8 is a side elevation showing the top adjusted todifferent angles. Fig. 9 is a plan of the top of tube 0, showing the lugor swell E, on which the eccentric collar D operates.

In the drawings, A denotes the table-top, supported by a centralstandard consisting of the tubes B and O. The tube B slides within thetube 0 and is retained at any point of extension by a partial turn ofthe eccentric collar or han d-wheel D,which clamps B to O by means ofdepression or swell E in the top of tube C. The head F of the tube B ismade with a double-inclined concave face,

M M indicate the feet, connected together,

through which the tube 0 passes at N and is held in place by set-screwO.

P denotes a coil-spring, which counteracts the weight of the top A,while being vertically adjusted by extending the tubes B and O.

In construction the taper pin J is made of steel and driven tightly intothe cast-iron flange K. The eyebolt I answers the double purpose ofclamping the disk G to the head Fig. 2 7

F to retain the top A in any desired angle or slant and also to grip thetaper pin J and prevent the top A from rotating. However, the eye may beomitted from the'bolt I and a common bolt-head substituted, which willpermit the pin J to pass outside of the bolthead, when the bolt I willclamp the disk G to head F and leave the pin J free to serve as a pivotfor the top A. By these means the table-top may be adjusted and held atany desired height and also at any desired angle or slant ranging from avertical on either side of the standard to ahorizontal position.

The inclines on the faces of disk G and head F are arranged to preventthe top A from slipping to a more vertical position when it is clampedand to hold it rigidly in a horizontal position.

The extension of tube 0 through the feet or base M permits increasedvertical adjustment.

When the top A is adjusted almost vertical, it may be used as an artistseasel.

The form and size of the various parts may be varied to suit differentrequirements.

I am aware that adjustable tables have heretofore been made fordraftsmen and for ladies cutting-tables. I do not therefore claim,broadly, such adjustable tables as my invention; but

What I do claim as my invention, and desire to secure by Letters Patent,is-

1. In a drawing-table, the combination, with a central standard providedwith ahead having a vertical face, a disk axially adj ustable on saidface, and a central bolt which clamps said disk to said head, of atable-top provided with a vertical pivot, said pivot bein gdiametrically inserted in said disk, whereby said table-top may rotatein its own plane and may assume different vertical angles by the axialadjustment of said disk.

2. In a drawing table, the combination, with a central standard and ahead thereon having a vertical face transversely concave, of anaxially-adjustable disk with a face transversely convex intermemberingwith the face of said head, a central bolt which clamps said disk tosaid head, and a horizontal tabletop attached to said diskby a verticalpivot,

whereby said table-top may approach a vertical position proportioned tothe amount said central bolt is loosened.

3. In a drawing-table, the combination of the central standardconsisting of tubes A and B, lug E, formed in the top part of tube A,

and the collar D, swiveled on tube A and provided with eccentric topaperture through which tube B passes, whereby a partial turn of collar Dclamps tube B rigidly against the IO inner side of tube A, substantiallyas described.

ROBERT S. CARR.

Witnesses:

H. R. DILG, D. M. MOCLUNG.

